package com.shisfish.library.Utils;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

import sun.misc.BASE64Encoder;

@SuppressWarnings("restriction")
public class EncryptUtils {

	/**
	 * @author shisfish
	 * @date 2015年12月18日 下午2:44:49
	 * @Description SHA加密
	 * @param password
	 * @return
	 * @throws NoSuchAlgorithmException
	 */
	public static String getSHA(String password) throws NoSuchAlgorithmException {
		
		MessageDigest md = MessageDigest.getInstance("SHA");// SHA 或者 MD5
		BASE64Encoder base = new BASE64Encoder();
		String pass = base.encode(md.digest(password.getBytes()));
		
		return pass;
	}
	
	/**
	 * @author shisfish
	 * @date 2015年12月18日 下午2:46:54
	 * @Description MD5加密
	 * @param passwrod
	 * @return
	 * @throws NoSuchAlgorithmException
	 */
	public static String getMD5(String password) throws NoSuchAlgorithmException {
		
		MessageDigest md = MessageDigest.getInstance("MD5");// SHA 或者 MD5
		BASE64Encoder base = new BASE64Encoder();
		String pass = base.encode(md.digest(password.getBytes()));
		
		return pass;
	}
	
	/*** 
     * MD5加码 生成32位md5码 
     */ 
    public static String string2MD5(String inStr){  
        MessageDigest md5 = null;  
        try{  
            md5 = MessageDigest.getInstance("MD5");  
        }catch (Exception e){  
            System.out.println(e.toString());  
            e.printStackTrace();  
            return "";  
        }  
        char[] charArray = inStr.toCharArray();  
        byte[] byteArray = new byte[charArray.length];  
  
        for (int i = 0; i < charArray.length; i++)  
            byteArray[i] = (byte) charArray[i];  
        byte[] md5Bytes = md5.digest(byteArray);  
        StringBuffer hexValue = new StringBuffer();  
        for (int i = 0; i < md5Bytes.length; i++){  
            int val = ((int) md5Bytes[i]) & 0xff;  
            if (val < 16)  
                hexValue.append("0");  
            hexValue.append(Integer.toHexString(val));  
        }  
        return hexValue.toString();  
  
    }  
  
    /** 
     * 加密解密算法 执行一次加密，两次解密 
     */   
    public static String convertMD5(String inStr){  
  
        char[] a = inStr.toCharArray();  
        for (int i = 0; i < a.length; i++){  
            a[i] = (char) (a[i] ^ 't');  
        }  
        String s = new String(a);  
        return s;  
  
    }
	
	public static void main(String[] args) throws NoSuchAlgorithmException {
		
		String random = "qn81x#l8kVgAj53b#5$3";
		String pwd = getSHA("123"+random);
		
		System.out.println(pwd+" "+random);
		
		String pp = getMD5("123"+random);
		System.out.println(pp+" "+random);
		String s = convertMD5("shuangsjye19940112");
		System.out.println(s);
		String ss = convertMD5(s);
		System.out.println(ss);
	}
	
}
